FBI agents from Pittsburgh arrested a man Thursday for allegedly stealing $136,000 from Northwest Bank in Middlesex Township during an armed robbery Saturday.

The FBI identified the suspect as Matthew Milliron, whose address and age were not available. He is being held in the Allegheny County jail. His initial appearance in U.S. District Court in Pittsburgh has been scheduled for Sept. 8. A court document said he was born in 1982.

A lone armed white man with a black handgun and a gaiter pulled over his face entered the bank at 1421 Pittsburgh Road at 11:46 a.m. and demanded money from a woman teller, FBI special agent Lauren Scott wrote in a criminal complaint.

Initially, the teller thought the man was joking.

“He then pulled out a black pistol, grabbed me by my neck, put the gun in my back, shoved me in my back, (and) told me it was not a joke (and) if I kept laughing he would kill my family at my house,” Scott said, quoting the teller.

The man led the teller to the vault with the gun in her back. After more than one woman teller loaded a black mesh draw string bag with money, the robber told them not to leave the vault until he left before he fled in an unknown direction.

An inventory audit determined the amount of money the suspect took. The tellers managed to put bait bills in the bag with the rest of the money, according to the complaint.

Security cameras at a neighboring business recorded the suspect entering and exiting the bank and parking a red sedan nearby at 11:36 a.m. The cameras then recorded the suspect walking east into some woods wearing a white T-shirt and emerging wearing a blue or black long-sleeved shirt. The footage then shows the suspect walking along Central Drive before entering the bank at 11:46 a.m., according to the complaint.

Footage also shows the suspect running out of the bank at 11:48 a.m. toward the wooded area and then in a parking lot before getting back into the car at 11:50 a.m. and driving south on Pittsburgh Road.

After reviewing information about the bank robbery, Scott said she identified Milliron as a suspect because she is investigating him in connection with a July 5 armed robbery of a Family Dollar store in West Deer Township in Allegheny County.

On Aug. 9, Milliron paid his landlord $1,300 in rent using $100 bills, and his landlord photographed the license plate of a red Honda Accord he drove at the request of law enforcement, according to the complaint. The plate is registered to the mother of Milliron's son, the complaint said.

Scott said camera footage from both robberies showed similar suspects.

A photo from the bank showing the gaiter below the suspect's nose was shown to Milliron's mother, who identified the suspect as her son, according to the complaint.

Milliron's former girlfriend and a police officer who pulled him over in a traffic stop identified Milliron from the photo. Milliron's landlord and the mother of his child said the person in the photo resembled Milliron, according to the complaint.

During an interview with law enforcement, Milliron said he was in the area of the bank to trap minnows in a creek. However the creek is diverted underground in the area where he said he was trapping minnows, according to the complaint.